/* =========================================================
   Base layout primitives + utility classes
   ========================================================= */

.container {
  width: 100%;
  max-width: var(--container-lg);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.container--wide { max-width: var(--container-xl); }
.container--narrow { max-width: var(--container-sm); }

.section {
  padding-block: clamp(4rem, 10vw, 9rem);
  position: relative;
}

/* Typography helpers */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--ff-body);
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--ink-80);
  padding: 0.5rem 0.85rem;
  background: rgba(255, 255, 255, 0.03);
  border: var(--border-subtle);
  border-radius: var(--r-pill);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand-magenta);
  box-shadow: 0 0 10px var(--brand-magenta);
}

.lead {
  font-size: var(--fs-lead);
  line-height: var(--lh-relaxed);
  color: var(--ink-80);
  max-width: 58ch;
}

.text-gradient {
  background: var(--grad-text-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.text-accent { color: var(--brand-magenta-soft); }
.text-muted { color: var(--ink-60); }

/* Button system */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  padding: 0.95rem 1.5rem;
  font-family: var(--ff-body);
  font-size: var(--fs-sm);
  font-weight: 500;
  letter-spacing: 0.01em;
  border-radius: var(--r-pill);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform var(--dur-base) var(--ease-premium),
              background var(--dur-base) var(--ease-out),
              border-color var(--dur-base) var(--ease-out),
              box-shadow var(--dur-base) var(--ease-out),
              color var(--dur-base) var(--ease-out);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
  isolation: isolate;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: var(--brand-magenta);
  color: var(--accent-ink);
  box-shadow: 0 8px 24px rgba(230, 22, 115, 0.32),
              inset 0 1px 0 rgba(255, 255, 255, 0.2);
}
.btn--primary::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--brand-magenta-soft) 0%, var(--brand-magenta) 100%);
  opacity: 0;
  transition: opacity var(--dur-base) var(--ease-out);
  z-index: -1;
}
.btn--primary:hover {
  box-shadow: 0 12px 32px rgba(230, 22, 115, 0.45),
              inset 0 1px 0 rgba(255, 255, 255, 0.25);
}
.btn--primary:hover::before { opacity: 1; }

.btn--ghost {
  background: rgba(255, 255, 255, 0.04);
  color: var(--ink-100);
  border: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.btn--ghost:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.22);
}

.btn--whatsapp {
  background: #25d366;
  color: #073b1f;
  box-shadow: 0 8px 24px rgba(37, 211, 102, 0.28),
              inset 0 1px 0 rgba(255, 255, 255, 0.3);
  font-weight: 600;
}
.btn--whatsapp:hover {
  background: #2ee277;
  box-shadow: 0 12px 32px rgba(37, 211, 102, 0.4);
}

.btn--lg { padding: 1.1rem 1.85rem; font-size: var(--fs-body); }
.btn--sm { padding: 0.6rem 1rem; font-size: var(--fs-xs); }

.btn .btn__arrow {
  transition: transform var(--dur-base) var(--ease-premium);
}
.btn:hover .btn__arrow { transform: translateX(4px); }

/* Reveal on scroll */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity var(--dur-entry) var(--ease-premium),
              transform var(--dur-entry) var(--ease-premium);
  will-change: opacity, transform;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal[data-delay="1"] { transition-delay: 90ms; }
.reveal[data-delay="2"] { transition-delay: 180ms; }
.reveal[data-delay="3"] { transition-delay: 270ms; }
.reveal[data-delay="4"] { transition-delay: 360ms; }
.reveal[data-delay="5"] { transition-delay: 450ms; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; }
}

/* Visually hidden */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* Noise overlay (premium texture) */
.noise-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 2;
  opacity: 0.035;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}